Mining multi-tooth-head cutting tooth tool bit

Abstract

The invention provides a mining multi-tooth-head cutting tooth tool bit. The mining multi-tooth-head cutting tooth tool bit comprises a tooth body, a main tooth head, a tool bit pedestal and a tooth handle. The upper portions of the main tooth head and vice tooth heads are in conical shapes, and the lower portions of the main tooth head and the vice tooth heads are in cylindrical shapes. The tool bit pedestal is made of hard alloy materials, and a main cutting tooth groove is formed in the top face of the tool bit pedestal. The lower portion of the main tooth head is internally embedded into the main cutting tooth groove, a plurality of vice cutting tooth grooves are formed in the position, on the outer circle of the main cutting tooth groove, of the top face of the tool bit pedestal, and the lower portions of the vice tooth heads are internally embedded into the vice cutting tooth grooves. A protruding rod is arranged at the center of the bottom face of the tool bit pedestal, a sunken groove is formed in the top face of the tooth body, and the protruding rod is internally embedded in the sunken groove. The bottom face of the tool bit pedestal and the top face of the tooth body make contact with each other and are fixedly connected, and a hole used for releasing stress is formed in the bottom of the protruding rod. The tooth body is made of metal materials, and the surface of the upper portion of the tooth body is coated with a hard face alloy layer. According to the mining multi-tooth-head cutting tooth tool bit, the structure design is reasonable, abrasive resistance and impact resistance are reinforced, the tooth body is effectively protected, and the service life o the tool bit is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a mining multi-tooth pick cutter head. Background technique [0002] Traditional coal and mine excavation and tunnel excavation and other drill bits are mainly composed of a base and a pick welded on the base. The base is made of ordinary metal materials such as chromium, manganese or tungsten steel, and includes two parts: a cylindrical gear shaft at the bottom and an umbrella-shaped tooth body at the top. The pick is made of cemented carbide material, its shape is similar to a bullet shape, and it is embedded in the top of the base (that is, the top center of the tooth body. However, the carbide pick is in use. There are problems such as non-wear resistance and short service life. Especially when encountering relatively hard rock formations, the traditional carbide picks are worn out after ten minutes of use, so the cost of use is very high and the efficiency is very low. ...

AI Technical Summary

Problems solved by technology

However, the hard alloy picks have problems such as non-wear resistance and short service life during use

Images